Forward curve blower wheels, also called forward curved fan wheels or squirrel cage wheels, are what we have built in our Long Island City, New York factory since 1948. Every forward curve wheel has double riveted blades and is dynamically balanced, in steel, stainless steel or aluminum, clockwise or counterclockwise, with any bore. We make them from 6" to 40" in diameter, and custom sizes are available.

Forward curve wheels we make

• Single Inlet Forward Curve Blower WheelsSingle inlet, single width (SWSI) forward curve wheels, 6" to 40", for exhaust blowers, ovens and process equipment.
• Double Inlet Forward Curve Blower WheelsDouble inlet, double width (DWDI) forward curve wheels, 6" to 40", for furnaces, air handlers and fan coils.
• DWDI Forward Curve Air KitsForward curve blower assemblies: wheel, housing and shaft, ready to install.
• Direct Drive Forward Curve BlowersDirect Drive forward curve blowers with the motor mounted in the wheel.
• Duplicate a forward curve wheelNo part number? Send photos or the old wheel and we build an exact match.

How a forward curve wheel works

A forward curve wheel has many shallow, cupped blades that lean toward the direction of rotation. It turns slower than a backward curved wheel for the same airflow, so it is quiet and compact, which is why most furnaces, air handlers and small exhaust blowers use one. It suits clean air at low to medium static pressure. For a full comparison, see forward curve vs backward curved wheels.

Forward curve wheel replacement

To replace a forward curve wheel, measure the diameter, the width across the blades and the bore, and note the rotation (how to tell) and hub location (how to measure). Then match it in the Wheel Finder or send us photos. Call or Email for Quote.

Forward curve wheel sizes

Pick a diameter to see every standard width and bore.

Materials

• Steel: strong and economical for most HVAC and exhaust work.
• Stainless Steel: for kitchens, pools, moisture and corrosive air.
• Aluminum: light and rust free.

Questions

What is a forward curve wheel?

A centrifugal blower wheel with many small blades that curve forward, toward the direction of rotation. It is also called a forward curved fan wheel or a squirrel cage wheel, and it moves a lot of air at low pressure, quietly and in a small space.

Where are forward curve blower wheels used?

Furnaces, air handlers, fan coil units, rooftop units, AC units, exhaust blowers, ovens and dryers: almost anywhere a compact, quiet blower is needed.

Single inlet or double inlet?

A single inlet (SWSI) wheel takes air in from one side and has a solid back plate. A double inlet (DWDI) wheel takes air in from both sides with the hub in the middle, as in most furnaces and air handlers.

What sizes do you make?

Forward curve wheels from 6" to 40" in diameter, single or double inlet, in steel, stainless steel or aluminum, clockwise or counterclockwise, with any bore. Custom sizes are available.

Can you match my old forward curve wheel?

Yes. Send the diameter, width, bore and rotation, or photos of the wheel, and we build an exact match. No part number is needed.